current transformer CT with DC immunity for energy meter 100A

DCT-5 current transformer

Basic Parameter

Primary current (A)

Secondary current (mA)

Resistance

Rb (Ω)

Maximum currant (A)

Class

Remark

5

2

10

80/100

0.1~0.2

Current error and phase error limited

Class

Current error±(%)

Phase error( )

5

%In

20

%In

5

%In

20

%In

100

%In

120

%In

200

%In

400

 %In

INmax

%In

0.2

0.2

0.1

8

5

5

5

5

5

5

Note:between the current 0.2In~Imax,taking the average δe between the maximum and minimum phase error.

δi=δi-δe.(δI: phase error,δI: phase displacement when the working current at i time,δe:average phase displacement)

Half-sinusoid Test

Energy metering error is less than 3 percent

Working Atmosphere

Limiting ambient temperature-40°C~+70°C;Altitude ≤3000m

Main Electric performance

The withstand voltage between the primary and secondary windings is no less than 3kV and insulation resistance is no less than 1GΩ